The Sorensen Supplies Company recently purchased a new delivery truck. The initial cash outflow for the new truck is $25,000, and it is expected to generate after- tax cash flows of $6,325 per year. The truck has a 5-year expected life. The expected year-end abandonment values (after-tax salvage values) for the truck are given below. The company's WACC is 10% Year Abandonment Value Annual After-Tax Cash Flow 0 1 2 3 ($25,000) 6,325 6,325 6,325 6,325 6,325 $20,000 17,500 14,500 8,500 0 4 5 a. What is the truck's optimal economic We? Round your answer to the nearest whole number. year(s) b. Would the introduction of abandonment values, in addition to operating cash flows, ever reduce the expected NPV and/or IRR of a project? -Select